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Information × Registration Number 0222U005293, 0122U200095 , R & D reports Title Erosion resistance of Cu-W composite materials in interaction with plasma popup.stage_title Head Veklych Anatolii M., Доктор фізико-математичних наук Registration Date 27-12-2022 Organization Taras Shevchenko National University of Kyiv popup.description2 The object of research is the thermal plasma of an electric arc discharge between composite electrodes. The purpose of the work is to establish the physical processes that take place during the interaction of thermal plasma with the surface of Cu-W composite materials. Research methods – optical emission spectroscopy, the method of Boltzmann diagrams, absolute intensities of the radiation of spectral lines. A description of the results of research carried out at the Department of Physical Electronics of the Faculty of Radiophysics, Electronics and Computer Systems of Taras Shevchenko National University of Kyiv in accordance with the order dated 04/07/2022 No. 314 "On financing joint Ukrainian-Czech research projects in 2022". In this work, the plasma emission of electric arc discharges between pairs of Cu-W50 vol.% composite electrodes was investigated using optical emission spectroscopy methods. Electrodes made of Cu-W50 vol.% composite materials using impact pressing technology at temperatures of 750, 850, 950, and 1050°C were considered. In particular, spectra were registered and processed radiation in the positive column and near-electrode areas of the plasma of such discharges with spatial resolution. Using the method of Boltzmann diagrams with the involvement of the absolute values of the spectral lines of both copper and tungsten, the radial distributions of the plasma temperature in various cross sections of the arc. The concentration of metal atoms of electrode origin (copper and tungsten) in the positive plasma column of electric arc discharges between all types of electrodes made of Cu-W composite materials was determined by the method of absolute intensities. The intensity of erosion of individual components of composite materials was estimated in an indirect way by comparing the radial distributions of atoms of materials of electrode origin for each type of arc discharge studied in this paper.  Product Description popup.authors Ivanisik Anatoliy I. Boretskij Viacheslav F. Murmantsev Oleksandr O. popup.nrat_date 2022-12-27 Close